Superformula

One equation: starfish, gears, leaves, sea urchins.

images.blob · v1 · renderer canvas

m 3, n₁ 0.46, n₂ 3.15, n₃ 3.15 · m 5, n₁ 1.87, n₂ 6.10, n₃ 6.10 · m 6, n₁ 0.65, n₂ 5.29, n₃ 5.29 · m 9, n₁ 4.20, n₂ 9.16, n₃ 9.16 · m 13, n₁ 1.95, n₂ 8.71, n₃ 8.71

[data-canvas-stage] { display: none; }

Drawn in the browser

This generator does not send you an image. The server sends a short description of one — the parameters below, plus a 32-byte key — and the drawing is done here, from the same byte stream the server would have used. That needs JavaScript, so with it switched off there is nothing to show.

The description itself is still public: /api/v1/g/images.blob returns it, and the maths is in resources/js.

m 3, n₁ 0.46, n₂ 3.15, n₃ 3.15 · m 5, n₁ 1.87, n₂ 6.10, n₃ 6.10 · m 6, n₁ 0.65, n₂ 5.29, n₃ 5.29 · m 9, n₁ 4.20, n₂ 9.16, n₃ 9.16 · m 13, n₁ 1.95, n₂ 8.71, n₃ 8.71

entropy in

16 bytes

stream used

951 bytes

rejections

duration

24,438 µs

palette

background

#010103

shapes drawn

symmetry

m=3, m=5, m=6, m=9, m=13

Seed receipt

Class C · Observational

It was 2.8°C in Ushuaia, Argentina, with a 11 km/h wind, when this was made.

Carries only tens of bits of genuine surprise. Always mixed with the OS CSPRNG.

source: Live Weather
observed: 2026-09-13T18:46:15+00:00
latency: 96ms
mixed with: csprng — always

https://open-meteo.com/en/docs#latitude=-54.801&longitude=-68.303 ↗

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The token is the seed, so this link recomputes the result rather than looking it up. No database, and it works for as long as v1 does.

Controls · from schema()

Width

256 2048

Height

256 2048

Specimens

1 9

The first one is the subject and runs off the edges of the frame; the rest are companions settled around it, each an independent draw of m, n₁, n₂ and n₃.

Bands

1 14

Concentric copies of the same shape, shrinking inwards and walking the palette as they go. Few and opaque reads as a body; many and thin reads as a scribble.

Symmetry (m)

0 16

Below 3, the seed draws m per shape — the surprise-me setting. Above it, every shape is pinned to the same fold count.

Morph

0 1.5

How far n₁, n₂ and n₃ drift between the outer band and the innermost one. At zero the bands are concentric copies.

Twist

0 2

Rotation accumulated from band to band, in turns. A little offsets the lobes; past a tenth or so the bands stop lining up and the shape turns into interference.

Scatter

0 1

How far the companions sit from the subject. At zero they crowd into it; at one they stand clear of it.

Fill opacity

0 1

Zero leaves pure outlines. Near one, each band covers the one outside it and the specimen reads as a solid.

Outline width

0 8

Zero leaves pure fills.

Ground

Colour

Palette size

2 12

Grain

0 0.08

Entropy source

Picking a source changes the story on the receipt, never the quality: anything below class A is mixed with the OS CSPRNG before it reaches you. This result actually came from Live Weather.

seed token AK4JXD43X9DG4BR2S0HGE5PQYG

Re-render keeps this token. Generate replaces it. That is the whole idea.

Burned into the corner before the file is written, so the image keeps its provenance wherever it ends up:

This page and /api/v1/g/images.blob run the same code. There is no private endpoint.

Superformula

Result

Measurements

Seed receipt

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